The Performance Of 300 Series Stainless Steel
According to the American AISI standard, stainless steel is represented by three-digit Arabic numerals. The first digit indicates the category, and the second and third digits indicate the sequence number. The 300 series stainless steel whose first digit starts with 3 is austenitic stainless steel with a Cr-Ni structure. Common grades are:
1.304 low-carbon austenitic stainless and acid-resistant steel
Performance: general resistance to intergranular corrosion and excellent corrosion resistance, and has a certain degree of corrosion resistance to alkalis and most organic and inorganic acids. Uses: Widely used in decoration and acid pipelines, chemical equipment, etc. The Guangdong Stainless Steel Materials and Products Association has some pipe-making member companies that produce 304 stainless steel decorative pipes, product pipes and decorative panels.
2.304L low carbon austenitic stainless steel
Performance: It has good resistance to crystal and corrosion, and has good corrosion resistance in various strong corrosive media. Uses: Suitable for petrochemical corrosion-resistant equipment parts, especially welded pipe fittings that cannot be heat-treated after welding.
3.304H austenitic stainless heat-resistant steel
Performance: good corrosion resistance and welding performance, good thermal strength. Uses: Mainly used in large boiler superheaters, reheaters, steam pipes, and petrochemical heat exchangers.
4.316 austenitic stainless hot-strength steel
Performance: Good corrosion resistance and pitting resistance to a variety of inorganic acids, organic acids, alkalis, and salts, and good variable strength at high temperatures. Uses: Suitable for large-scale boiler superheaters, reheaters, steam pipes, petrochemical heat exchanger pipe fittings, and can be used as pitting corrosion resistant materials.
5.316L ultra-low carbon austenitic stainless steel
Performance: It has good resistance to crystal and corrosion, and has good corrosion resistance to organic acids, alkalis and salts. Uses: Widely used in acid pipelines and chemical equipment, etc.
6.321 austenitic stainless acid-resistant steel
Performance: It has high resistance to intergranular corrosion, and has good corrosion resistance to some organic and inorganic acids. Uses: used in the manufacture of acid-resistant transportation pipelines, large boiler superheaters, reheaters, steam pipelines, petrochemical heat exchangers, etc.
7.317L austenitic stainless acid-resistant steel
Performance: Excellent corrosion resistance, better resistance to pitting corrosion in chloride-containing solutions. Uses: To manufacture main resistant pipes for industrial equipment such as synthetic fiber, petrochemical, textile, papermaking and atomic energy post-processing.
8.310S austenitic heat-resistant stainless steel
Performance: Good resistance to intergranular corrosion, excellent resistance to chloride stress corrosion, and good resistance to high temperature oxidation. Uses: used to make furnace tubes, boiler superheaters, heat exchanger pipe fittings.
9.347H austenitic stainless hot-strength steel
Performance: It has good corrosion resistance, welding performance and thermal strength. Uses: used in large boiler superheaters, reheaters, steam pipes, and petrochemical heat exchanger pipe fittings.
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By Minghe Die Casting Manufacturer |Categories: Helpful Articles |Material Tags: Aluminum Casting, Zinc Casting, Magnesium Casting, Titanium Casting, Stainless Steel Casting, Brass Casting,Bronze Casting,Casting Video,Company History,Aluminum Die Casting |Comments Off
